During the 10th century, among over twenty Shiwei tribes, there would be another interesting name called 'Huangdou Shiwei', i.e., yellow head Shiwei. Xin Wu Dai Shi, citing the account of a Chinese (Hu Qiao) taken prisoner of war by Khitans, mentioned that there were a statelet called Yujuelu with 'Maodou' (hairy head) people to the northwest of Shiwei and to the north of the Kirghiz people. Also to the northeast of Shiwei would be another group of 'Maoshou' or hairy head people.
Genghis Khan was rumored to have carried red hair and green eyes. Paul Ratchnevsky quoted the contemporary Chinese Zhao Hong as saying that Genghis Khan differed from other Tartars in that he was tall and had long beard, and quoted Marco Polo as saying that Khubilai did have black hair but fair complexion 'ringed with red'. Rashid ad-Din, in 'Collected Chronicles', said that Genghis Khan was amazed to see that Khubilai had black hair while the rest of their family had red hair and said his grandson must have taken 'his old uncles' features. Genghis Khan belonged to the Borjigid clan which was a branch of the Kiyats to which the Jurchens (Jurchids), Changsi'ut and the Kiyat-Sayar also belonged. The importance of the Borjigids lies in the legend that after the death of Dobun-mergen, the alleged ancestress Alan-ko bore Bodunchar after being visited by a strange 'golden glittering man'. Rashid ad-Din alluded to a foreign origin of the visitor and described him as having red hair and blue-green eyes.
Paul Ratchnevsky speculated that the mysterious visitor could be a Kirghiz since the Kirghiz people were said to be tall and possessed red hair and green eyes. Note that Rashid ad-Din's writings came from secondary sources and rumors and that Yuan Shi (History of Yuan Dynasty) only recorded that Bodunchar had grey eyes against the chestnut-colored eyes of his brothers and half-brothers. Nothing is mentioned of hair or skin of Bodunchar or Genghis Khan."